From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751883AbdJFBLm (ORCPT <rfc822;w@1wt.eu>);
        Thu, 5 Oct 2017 21:11:42 -0400
Received: from smtprelay0012.hostedemail.com ([216.40.44.12]:45958 "EHLO
        smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL)
        by vger.kernel.org with ESMTP id S1751832AbdJFBLf (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 5 Oct 2017 21:11:35 -0400
X-Session-Marker: 726F737465647440676F6F646D69732E6F7267
X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::::::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1537:1561:1593:1594:1711:1714:1730:1747:1777:1792:2393:2553:2559:2562:3138:3139:3140:3141:3142:3622:3866:3867:3873:3874:5007:6120:6261:6742:7875:10004:10400:10848:10967:11026:11232:11473:11658:11914:12296:12438:12740:12760:12895:13069:13311:13357:13439:14181:14659:14721:21080:21627:30054:30090:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:1,LUA_SUMMARY:none
X-HE-Tag: play16_2aa1593e4f715
X-Filterd-Recvd-Size: 1847
Date: Thu, 5 Oct 2017 21:11:30 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Kees Cook <keescook@chromium.org>, Ingo Molnar <mingo@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Alexei Starovoitov <ast@kernel.org>,
        Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>,
        "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        LKML <linux-kernel@vger.kernel.org>, "H . Peter Anvin" <hpa@zytor.com>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>,
        "David S . Miller" <davem@davemloft.net>,
        Ian McDonald <ian.mcdonald@jandi.co.nz>,
        Vlad Yasevich <vyasevich@gmail.com>,
        Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [RFC PATCH -tip 0/5] kprobes: Abolish jprobe APIs
Message-ID: <20171005211130.2c0d7987@vmware.local.home>
In-Reply-To: <20171006093252.2ea0e445187feca6cb49d517@kernel.org>
References: <150724519527.5014.10207042218696587159.stgit@devbox>
        <CAGXu5jJbSFjck+_-RGQytkDuRhtc1U=pYXavyxpbjd_W-=N_tA@mail.gmail.com>
        <20171006093252.2ea0e445187feca6cb49d517@kernel.org>
X-Mailer: Claws Mail 3.15.0-dirty (GTK+ 2.24.31; x86_64-pc-linux-gnu)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Fri, 6 Oct 2017 09:32:52 +0900
Masami Hiramatsu <mhiramat@kernel.org> wrote:

> I think using ftrace gives you lower latency, but you need to depend on
> CONFIG_FUNCTION_TRACER instead of CONFIG_KPROBES.

Which shouldn't be an issue, since all distros now have that enabled.

-- Steve